Description
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in bitmap.c that allows malicious RDP servers to crash clients by sending malformed 32 bpp compressed bitmaps. Attackers can declare a large bitmap geometry with a short compressed body in bitmap update PDUs or bitmap cache orders, causing unbounded reads past the receive buffer and denial of service.
Published: 2026-10-19
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 19 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 19 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Description rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_plane() in bitmap.c that allows malicious RDP servers to crash clients by sending malformed 32 bpp compressed bitmaps. Attackers can declare a large bitmap geometry with a short compressed body in bitmap update PDUs or bitmap cache orders, causing unbounded reads past the receive buffer and denial of service.
Title rdesktop through 1.9.0 Heap Out-of-Bounds Read via process_plane
First Time appeared Rdesktop
Rdesktop rdesktop
Weaknesses CWE-125
CPEs cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*
Vendors & Products Rdesktop
Rdesktop rdesktop
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Rdesktop Rdesktop
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-19T19:28:48.290Z

Reserved: 2026-10-19T13:25:29.594Z

Link: CVE-2026-112277

cve-icon Vulnrichment

Updated: 2026-10-19T19:28:09.427Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T14:17:05.663

Modified: 2026-10-19T21:14:14.150

Link: CVE-2026-112277

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T15:45:17Z

Weaknesses